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lesya [120]
3 years ago
9

Which of the following is NOT a beta-lactam antibiotic?

Biology
1 answer:
emmainna [20.7K]3 years ago
4 0

Answer:

vancomycin

Explanation:

β-lactam antibiotics are those antibiotic that that contain a beta-lactam ring (the cyclic amide with the nitrogen atom attached to the β-carbon) in their molecular structures. This class of antibiotics is the most commonly used and it includes penicillin derivatives, cephalosporins, monobactams, and carbapenems. The mechanism of action of β-lactam antibiotics is inhibition of cell wall biosynthesis in the bacteria.

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Which of these statements is true?
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I think its letter b.
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American vultures used to be classified in the same family as African vultures. Which discovery caused scientists to reclassify
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Answer:

DNA evidence revealed the American vultures share more recent ancestor with the Storks

Explanation:

The hooded vultures that is mostly found in the African continent have a close resemblance with the American vultures and were traditionally classified to belong to the Falcon family.

However, it was observed that the American vultures shared a similar behavior with Stork which is not common to the vulture found in Africa, including the hooded vulture. The Stork and the American vulture exhibit the behavior of urinating on their legs when being overheated. When the urine gets evaporated, it helps them to cool their body temperature.

This shared behavior between the storks and the American vultures led scientists into using molecular analysis in analyzing the DNA of the hooded vultures found in Africa, the American vultures, and the stork.

Evidence from the DNA analysis later revealed that the American vultures and the storks share a more common DNA sequences than African vultures and American vultures do.

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Most of the metabolic work is in the:
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3 years ago
Mistletoe steals nutrients and ____ from its host plant.<br> A. Carbon Dioxide<br><br> B. Water
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ANSWER AND QUESTION.....

Mistletoe steals nutrients and """water"""

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